US3926831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry-cleaning agent
Assignee: Individual
•
Filing: 1974-06-18
•
Granted: 1975-12-16
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Expires: 1994-06-18
Abstract
Abstract A dry-cleaning agent consists essentially of an organic solvent and an addition which contains a surfactant. The agent is free of water and the surfactant has a HLB value ranging from about 13 to 18.
Inventors
- 👤 Erhard Sonnengruber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:43
CPC Classifications
D; D06; D06L; D06L1/00; D06L1/02; D06L1/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
38 words
A DRY-CLEANING AGENT CONSISTING ESSENTIALLY OF A CHLORINATED HYDROCARBON CONTAINING AN EFFECTIVE AMOUNT OF ASURFACTANT, I. SAID EFFECTIVE AMOUNT OF SURFACTANT CONTAINING AS A MIXTURE AT LEAST 75% BY WEIGHT OF AN EXTHOXYLATE COMPONENT HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
38 words
A DRY-CLEANING AGENT CONSISTING ESSENTIALLY OF A CHLORINATED HYDROCARBON CONTAINING AN EFFECTIVE AMOUNT OF ASURFACTANT, I. SAID EFFECTIVE AMOUNT OF SURFACTANT CONTAINING AS A MIXTURE AT LEAST 75% BY WEIGHT OF AN EXTHOXYLATE COMPONENT HAVING THE GENERAL FORMULA:
Claim 3
Dependent Claim
29 words
The dry-cleaning agent of claim 1, wherein the amount of said surfactant ranges from about 2 to 5 grams per liter of solvent, and wherein the solvent is perchlorethylene.
Claim 4
Dependent Claim
27 words
The dry-cleaning agent of claims 2, wherein the surfactant is made up of approximately 3 parts of the ethoxylate component and 1 part of said sulfonate component.
Claim 5
Dependent Claim
40 words
C1-C10-ALKYL GROUPS WITH THE PROVISO THAT THE NUMBER OF TOTAL SUBSTITUENTS CARBON ATOMS DOES NOT EXCEED 18, B. BRANCHED C3-C12-ALKYL GROUPS, C. STRAIGHT CHAIN C4-C12-ALKYL GROUPS, D. C4-C17-ACYL GROUPS E. THE RESIDUE OF A FATTY ACID ESTER OF THE FORMULA
Claim 6
Dependent Claim
40 words
C1-C10-ALKYL GROUPS WITH THE PROVISO THAT THE NUMBER OF TOTAL SUBSTITUENTS CARBON ATOMS DOES NOT EXCEED 18, B. BRANCHED C3-C12-ALKYL GROUPS, C. STRAIGHT CHAIN C4-C12-ALKYL GROUPS, D. C4-C17-ACYL GROUPS E. THE RESIDUE OF A FATTY ACID ESTER OF THE FORMULA
Claim 7
Dependent Claim
14 words
The dry-cleaning agent of claim 3, wherein said ethoxylate is polyoxyethylene fatty alcohol ether.
Claim 8
Dependent Claim
20 words
SAID SURFACTANT HAVING A SULFONATE COMPONENT RANGING UP TO ABOUT 25% BY WEIGHT OF THE MIXTURE HAVING THE GENERAL FORMULA:
Claim 9
Dependent Claim
20 words
SAID SURFACTANT HAVING A SULFONATE COMPONENT RANGING UP TO ABOUT 25% BY WEIGHT OF THE MIXTURE HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |